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SEELEY & GRISWOLD.

Grain Winnower. No. 20,735. Patented June 29, 1858.

oo o0 NITED STATES PATENT OFFICE.

H. H. SEELEY AND P. GRIS\VOLD, OF HUDSON, MICHIGAN.

GRAIN-SEPARATOR.

Specification of Letters Patent No. 20,735, dated June 29, 1858'.

To all whom t may concern:

Be it known that we, H. H. SEELEY and PHILANDER GRiswoLD, both of Hudson, in the county of Lenawee and State of Michigan, have invented a new and Improved Grain-Separator; and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure l, is a longitudinal vert-ical section of our invention, taken in the line m, Fig. 2. Fig. 2, is a horizontal section of ditto taken in the line y, y, Fig. l.

Similar letters of reference indicate corresponding parts in the two figures.

This invention consists in the employment or use of a fan peculiarly arranged with a box, as hereinafter described, whereby air may be admitted into the box at its center as well as its ends, the whole being so arranged that the operation of the machine is rendered very eflicacious and greatly facilitated.

To enable those skilled in the art to fully understand and construct our invention we will proceed to describe it.

A, represents a box or case, in which a shoe B, is suspended. The shoe and case may be constructed in the usual way, and therefore do not require a minute description. The shoe B, is suspended within the case A, by means of pins a, which pass through inclined slots b, made in the sides of the case A. The position of the slots is clearly shown by the dotted lines in Fig. l, there being two slots b, at each side of the case, one near its inner and the other near its outer end.

-C, isa fan box, which is secured to one end of the case A. This box is formed in two parts, c, CZ, as shown clearly in Fig. 2, and the fan D, is also formed of two parts or it may be described as being two fans placed on a shaft E, a fan being in each compartment c, (Z, of the box C. On the back part of the fan box C, two slides F, F, are placed, one at the upper and the other at the lower part of the box. These slides are fitted between suitable guides e, e, e, the guides being so placed that the space f, between the two parts c, d, of the fan box, may be contracted as desired, and entirely closed, either at the upper or lower part of the box, or both as may be desired.

On the center of the shaft E, of the fans D, an eccentric F, is placed and to this eccentric a rod G, is attached by a strap g. The end of the rod G, is connected to the lower end of an arm H, which is attached to a rock shaft I, fitted transversely, in the case A, and the arm H, is connected by a rod h, to the shoe B. The shoe B, is provided with the usual screens.

The operation is as follows: The fan shaft E, is rotated by any proper means, and the shoe B, is operated by means of the eccentric F, rod Gr, arm H, and rod h, arranged as shown. The shoe has an oblique reciprocating motion in consequence of the pins o, being fitted in oblique slots b. This oblique movement ofthe shoe has a tendency to cause the grain to pass quickly over the screens and also has a tendency to cause the screens to more effectually separate the grain from foreign substances.

The grain while passing over the screens is subjected to a blast generated by the fan D, and the strength of the blast may be graduated as desired by regulating the slides F, F, and as the air is admitted at the center of the box C, as well as at its ends as usual, the blast will be forced evenly across the whole width of the screen. Either of the slides F, or F, may be regulated separately so that the air may be admitted either into the upper or lower part of the fan box as occasion may require.

We do not claim operating the shoe B, by means of the eccentric F for this is a well known mechanical device used for analogous purposes; but,

Having thus described our invention, what we claim as new and desire to secure by Letters Patent, is,

Forming the fan box C, of two parts c, d, and the fan D, made also in two parts, so as to have one portion of the fan for each compartment of the box, and having the slides F, F attached to the box C, to regulate the admission of air into the opening f, between the parts c, d, of the fan box, the whole being arranged as and for the purpose specified.

" H. H. sEELEY. P. GRIswoLD.

lVitnesses:

A. A. FINNEY, E. D. KIDDER. 

